The 31-year-old missed seven games in the 2013 campaign as he struggled with injuries throughout the year, which affected his play.
"I don't know," Harper told SiriusXM NFL "I think Mickey [Loomis] and Sean [Payton] and these guys, they've got some decisions to make.
"The bottom line is, I was hurt. I missed eight or nine games this year. For the first time in a long time, I missed games. And the defense did well.
"I was just happy that when I did come back, I finally got healed up and healthy enough."
Harper had 39 tackles and one interception in the 2013 season.